Sinead O'Connor made some serious allegations about Prince and Arsenio Hall on Facebook this week.

The singer alleged that Hall was Prince's drug supplier for many years. And she also said the former talk show host even drugged her.

O'Connor wrote:

Two words for the DEA investigating where prince got his drugs over the decades. … Arsenio Hall (AKA Prince's and Eddie Murphy's bitch) Anyone imagining Prince was not a long time hard drug user is living in cloud cuckoo land. Arsenio I've reported you to the Carver County Sheriff's office. Expect their call. They are aware you spiked me years ago at Eddie murphy's house. You best get tidying your man cave.

But Hall is firing back and filed a $5 million defamation lawsuit again O'Connor. According to TMZ, in the lawsuit Hall adamantly denies supplying either Prince or O'Connor with drugs. He said she's "well known for her media antics and for seeking attention through inflammatory Facebook posts."